Patient interface device



FIG. 1 is a perspective view of a patient interface device showing our design:

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the patient interface device that form no part of the claimed design. 

CLAIM We claim the ornamental design for a patient interface device, as shown and described. 